Is there a clever way to right pad a string with zeros? Left padding with zeros is, of course, easy:

sprintf("%010s", $string)
Right padding with spaces is, of course, easy:

sprintf("%-10s", $string>
But is there an equally easy way to right pad with zeros? Currently, I've come up with three ways to do it: 

$padded = sprintf("%-10s", $string);    #or use pack "A10"
$padded = s/( +)$/"0" x length $1/e;

[download]

And: 

$padded = reverse sprintf("%010s", scalar reverse $string);

[download]

And, finally: 
$padded = "0" x 10;
substr($padded, 0, length $string) = $string;

[download]

They all work, but they just seem...hack-ish to me. I may just be being picky, since I can easily left or right pad with spaces to my heart's content, I'd like to easily left or right pad with zeros to my heart's content too.

So is there a better/cleaner/cleverer way to right-pad with zeroes or is this it?

In reply to clever zero _right_ pad? by jimt

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